Fresh 422", TEA AFR 247cc, A4 C5 Dyno results
11-08-2004, 08:53 PM
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Fresh 422", TEA AFR 238cc, A4 C5 Dyno results Did some dialing in with a customer/friends 98 C5 today...
Car is knocking down great gas mileage and same idle characteristics as it did with the old 220/224 cam in the 346"
We were very thrilled about the results...
Took no time at all to dial in the car with ls1edit (with almost no changes) as Futral Motorsports was nice enought to provide a tune with the cam they did for it.
Specs:
LeToy Motorsports Resleeved 422" Shortblock
- Eagle crank 4.0" , Lunati Rods, Diamond Pistons 11.0:1 compression
Total Engine Airflow fully ported AFR Heads. I believe they were 238cc, they flowed 350+ cfm intake/ 290+ cfm exhaust with a pipe, 2.10/1.60 valves
Futral 239/242 @ 114 very mild street cam, FLP 1-3/4" headers, B&B Catback
Stock LS6 Intake, Stock Vette Throttle body, HS 1.7 Roller rockers, underdrive pulley, stock wheels/tires
FLP A4 auto tranny with 3200 vig converter, 3.42 gear
Car will be seeing a FAST 90mm intake and Nick Williams 90 MM TB Next week hoping for approx 25-30 rwhp gain. Also the TNT F2 kit will be dialed in with the 200 rwhp jets in a few weeks after the cars broken in
Results
496 RWHP @ 5800 rpm (holds 485+ rwhp from 5000-6800)
570 RWTQ (Cant remember rpm, i believe it was 4250-4500). Car held over 500 rwtq for almost 1500 rpm...
The cars horsepower curve is almost perfectly flat from 5000 on, very mild street setup with sacrifice in stock like characteristics....First 427 car id ridden in and holy crap hold on till you let off the gas.
Car is knocking down great gas mileage and same idle characteristics as it did with the old 220/224 cam in the 346"
We were very thrilled about the results...
Took no time at all to dial in the car with ls1edit (with almost no changes) as Futral Motorsports was nice enought to provide a tune with the cam they did for it.
Specs:
LeToy Motorsports Resleeved 422" Shortblock
- Eagle crank 4.0" , Lunati Rods, Diamond Pistons 11.0:1 compression
Total Engine Airflow fully ported AFR Heads. I believe they were 238cc, they flowed 350+ cfm intake/ 290+ cfm exhaust with a pipe, 2.10/1.60 valves
Futral 239/242 @ 114 very mild street cam, FLP 1-3/4" headers, B&B Catback
Stock LS6 Intake, Stock Vette Throttle body, HS 1.7 Roller rockers, underdrive pulley, stock wheels/tires
FLP A4 auto tranny with 3200 vig converter, 3.42 gear
Car will be seeing a FAST 90mm intake and Nick Williams 90 MM TB Next week hoping for approx 25-30 rwhp gain. Also the TNT F2 kit will be dialed in with the 200 rwhp jets in a few weeks after the cars broken in
Results
496 RWHP @ 5800 rpm (holds 485+ rwhp from 5000-6800)
570 RWTQ (Cant remember rpm, i believe it was 4250-4500). Car held over 500 rwtq for almost 1500 rpm...
The cars horsepower curve is almost perfectly flat from 5000 on, very mild street setup with sacrifice in stock like characteristics....First 427 car id ridden in and holy crap hold on till you let off the gas.
Last edited by C4VetteLS1; 11-09-2004 at 01:58 PM.
11-08-2004, 08:58 PM
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HP maybe flat from lack of exhaust flow if the Y pipe was still on. When I had my stroker it did the same thing with my FLP's. I believe the Y pipe merge is only 2 1/2". Drop the Y pipe and watch the HP peak over 500+.
11-08-2004, 09:03 PM
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This is a corvette no Y-pipe, it was the offroad FLP test pipes...
I think alot of the flat curve is from the very mild camshaft with a 114 lsa...
I think the 90mm change will just move the entire curve up 20-30 and not change the end curve from flat to climibing up top.
Customers pretty happy with it because hes not looking for dyno #'s... I think the goal is 20 mpg, pump gas and mid 9 second passes (as it went 10.5 on the old 346" with n20)
I think alot of the flat curve is from the very mild camshaft with a 114 lsa...
I think the 90mm change will just move the entire curve up 20-30 and not change the end curve from flat to climibing up top.
Customers pretty happy with it because hes not looking for dyno #'s... I think the goal is 20 mpg, pump gas and mid 9 second passes (as it went 10.5 on the old 346" with n20)
11-09-2004, 07:11 AM
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The intake port volume is 238cc, that is the biggest intake port we have. Congrats on the numbers, a Fast 90 intake/ Nick Williams TB will yield 20+ RWHP and a set of 1 7/8 Kooks is another 10-15 RWHP.
Good luck on your mid 9 sec goal, don't forget about a Rossler input shaft and a DTE long and short shaft for the rearend!!
Good luck on your mid 9 sec goal, don't forget about a Rossler input shaft and a DTE long and short shaft for the rearend!!
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11-09-2004, 02:02 PM
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The FLP's on there will be staying as they are really nice and customer isnt interested in spending that much for 10 rwhp. (especially when we are going to be spraying 200-250, 10 horsepower will be the least of the concerns). Also, i dont think i can convince him about the rearend till it breaks..so guess we will see how it holds up
Fast intake goes on soon...ill post results after...
Fast intake goes on soon...ill post results after...
